Sheet-delivering device



.10 apneumatic grip and Patented Mar. 22, 1927.

UNITED STATES PATENT OFFICE.

Anni. KLUGE AND ENEVAL KLUGE, or sun. PAUL, MINNEsorA. ASSIGNORS *ro BRAN T- JEN AND maven, me, on ST. PAUL, MINNEso'rA, A CORPORATION or mNNnso'rA.

' SHEET-DELIVERING nnvrcn.

Application filed May 7, 1923, Serial J. 637,138. Renewed August a, 1925.

Our invention relates to improvements in sheet delivering. devices. c w

7 Its object is to supply a device of this kind particularly, though not exclusively, for taking printed shets from the platen or a printing press and releasing'the same upon a collecting rack or table. A further object is to provide a sheet delivering device for platen presses including novel means for directingthe'same through a cycle of movement including a "sharp downward approach to a printed "sheet on th'e platen, said means permitting of the 1 of its operative path and into inoperative position permitting of unobstructed access to the press parts. I ,7

Another object is to provide mechanism for moving a pneumatic grip i'n'ward to sheet receiving position and outward to sheet discharging position, that part of said mechanism serving-to carry the grip inward;

being adapted to yield to'avoid injury to parts in case the grip is obstructed in its in- 2 ward travel and also, to permit of the retraction of said grip out of normal position 1 in its cycle of movement.

An additional object isto provide a pneumatic sheet delivering device including novel driving and suction relievi means co-operating to enhance dependabi ity of operation and simplicity of construction' With the fore oing and other-objects in view, which wil .appear in the following description, the invention resides in the novel'combination and arrangement of parts and in the details of construction hereinafter described and claimed. i

In the drawings, Fig. 1 is an 'elevational view illustrating a platen press and asheet delivering device applied thereto and embodying our invention; Fig. 2 is a detail sectional view taken on, the line 2-2 of Fig. 1; Fig. 3 is a sectionalview taken on the line 3-3 of Fig. 2; Fig. :l is a perspective view in detail of a portion of-our improved device and Fig. 5 is a diagrammatic illustration showing the path of the pneumatic gri in relation to the platen and sheet collecting rack or table of the printing press.

, Referring to the drawings, we have illustrated, in Fig. '1, a platen press A of ordinary design. The improved sheet delivering mechanism applied to said pressin'cludes a swingingof said grip out bracket '10 suitably secured to I the pressframe in position reaching rearwardly from the platen 11. A track 13., comprising a rod 12 and bar 13-joined in spaced parallel relation at their ends by blocks 14 and 15, swings vertically on the bracket 10,, the

block 14 being pivoted on a bolt 16 .in the rear of the bracket 10 and the block 15 slidable vertically in an upright guide a secured to the forward end of said bracket. A carriage D moves back and forth on the track B, This carriage consists of a sleeve 17, slidable on the rod, 12 and a. saddle 18 joined by a web 19 witli said sleeve and slidable on the bar support E carried by the sleeve. 17- includ es a clamp 20 embracing said sleeve, said clamp being. gripped on said sleeve by means of a clamping bolt 21. Said ,supportE-alsoinclud'e's a rod 22 secured at one end thereof in a boss 23 on the clamp 20. Upon loosening the bolt 21, the clamp 20 may be turned on the slgeve'17 to swing the rod 22 between operative position '(solid lines, Fig. 4:) and inoperative position (dotted lines, Fig. 4). While the tightening of "the clamping bolt 21 serves to firmly grip the clamp 20 on said sleeve, we have arranged astop 24 on said clamp to engage the web 19 in horizontal, operative position of the support This stop automatically locates the .support horizontall and mimmizes the necessary binding orce of the clamping screw 21. A clamp 25 on the rod 22 together with a metallic tube 26, carried by said clamp, and cross-head 27 on said tube, comprise a mounting F for suction grips 28. Thesegrips, slidably supported on said cross-head 27, communicate through flexible tubes 29 with the metallic tube-26, which in turn, communicates througha flexible tube 30 with a suction conduit 31.

Meansy soon to be described, reciprocate the carriage D on the track B and raise and lower the forward end of said track to direct the grips 28 in paths with respect to the platen 11 and sheet collecting rack 32,. as shown in Fig. 5. In said figure, it will be observed that the grips 28 move toward the platen 11 in an elevated path33 curved thereof, which result might not obtain were rack 32. a

The turning of the support E from hori zontal, operative position to upright, inoperative position, carries said support, mount- .ingF and grips 28 out of the way of an operator having access to the press parts. The clamp. 25 provides for longitudinal.ad ust'- ment of the tube 26 thereon, whereby the reach of the grips 28 on the platen 11 may be varied. Said clamp 25, being capable of angular and longitudinal adjustment on the rod 22, also provides for shifting the grips 28 laterally of the platen 11 and, further provides for locating said grips in elevation to bring them into proper sheet taking relation.

The carriage D is reciprocated through the following means: An upright lever 34 pivots at its lower-end on a bracket 35 secured to the press. A link 36 joins the upper end said lever 34 with the sleeve 17 of the carriage D. A bell-crank G rockably mounted on the press A has one arm 37 thereof joined by a link 38 with said lever 34. The other arm 39 of the bell-crank G has a roller bearing 40 at its free end, which rides upon the surface of a cam'41. This cam turns on a stud 42 reaching outward from the side of the press frame and is driven from the press gear 43 through intermediate gears 44 and 45. An expansion spring46',bearin against an extension 47 on the bell-crank the carriage D forward, when the surface of the cam 41 recedes from the roller 40, but yields to permit the rearward movement of said carriage by said cam. In this connection, it may be noted'that the yielding power of the spring 46 in moving the carriage D forward is attended with-safety against the breakage of parts in case the grips 28 or carrying mechanism is obstructed in their forward movement. Said spring 46 also permits of the retraction of the carriage D out of its normal relation, which is at times carried out in addition to the raising the support E, preparatory to make-ready operat-ions. A hook 48 swung on the bolt 16 in the bracket 10 is arranged to catch a pin-49 on the carriage D-and hold the same back against the action of the spring 46. The track B tilts downward by gravity, butis elevated by power derived from the press. A lifter rod 50 is attached at its upper end to a pin 51 reaching outward from the block 15, through a slot 52 in the outer flange 53 moves of the guide 0. The lower end. of said rod is attached to the free end 'of'a lever 54, whichis pivoted on the press frame. Medially of g this lever'54 is a roller 56 arranged'to ride a cam 57 secured to the cam'41. The cams duit 31. A hollow stem 60-rising from. said block has a seat 61 at its up er end for a ball valve 62, whichis guided fi'om said seat by means of a cap or cage 63. ,A lever 64, pivoted at one end on the lever 34, has a looped valve lifting member 65 at its free end occupying position beneath the ball valve 62.

The-head '66 of a bolt 67, threaded upward through the lever 64 andsupplied with a lock nut 68, provides a fulcrum for engagement with the curved surface of a boss 69 on the bracket 35. The engagement of this fulcrum with said boss 69, upon the rearward throw of the lever 34, causes the lever 64 to lift the ball valve 62 from its seat 61. WVhen thus unseated, the valve admits air to the conduit 31 and destroys the gripping auction of' the suction grips 28. Being adustable, the bolt 67 may be set to cause the release of sheets by the grips 28 earlier or later in the rearward-throw thereof, as may bev desired. 7 Changes in the specific form ofour invention, as herein disclosed, may be made within Y the scope of What is claimed without depart ing from the spirit of our invention.

Having described our invention what we by Letters claim as new and desire to protect Patent is:- I y l. The combination with a platen press, of a bracket thereon, a track reaching back from the platen and pivoted at its rear end on said bracket, a carriage slidable on said track, a support swung on said carriage and movable from operative horizontal position 1nto inoperative upright position, a mounting adjustable angularly and longitudinally of said support, a pneumatic grip on said mounting, a suction conduit communicating with said grip,a valve adapted,'when open, to admit air to said conduit, means for reciprocating the carriage on said'track, means for tilting the track upward and downward, w

said means being co-ordinated with the press mechanism and with each other to direct the grip inward in a path pitching sharplydownward at its forward extremity to sheet taking position on the platen, thence rearward to depressed sheet releasing position back of said platen, and a device actuated by the grip.

ing said valve at sheet 2. The combination with a platen press, of

a bracket thereon, a track reaching back fromthe platen and pivoted at "its rear end I on said bracket, a carriage slidable onsaid track,a suction grip carried bythe carriage,

means for reciprocating the carriage on said track and means for ,til tin the track, said means'being co-ordinated with the vpress and with each other to direct the grip inward in an elevated path pitching sharply downward at its forward extremity-to sheet taking position on the platen, thencerearward todepressedsheet'releasing position back of- 1 I to be swiing thereonout of operative posi-.

the platen.

- 3. The'conibination with a platen press, of

a suction grip movable'back and forth be- .tween position for taking sheets from the platen and position for releasing the same at therear thereof and means co-ordinated with the press for-directing the grip to-receiving' I position in a forwardpath first substantially paralleling the platen then pitching sharply downward at the, end thereof and-to releasing-position-ina rearward path beneath said forward 'path. 1

4. The combination with a platen press, of

7a bracket thereon, a track e'xten'din along one side of the platen and pivotal y supported at one end thereof to swing vertically, .a carriage slidable on'said track, a grip carried by said carriage,- means for recipro cating the carriag: tilting-the trac nated with the press and with each other toon'said track, means for sa d means bemg co ord1- direct the grip-forward inone path to sheet taking position on the platen then bapkward in another path to sheetreleasing pos t on. A Y

'5. The combination with a platen press, of a track extending alon one side of the platen, a carriage sl'idab e on the track,-a. support hinged on the carriage and tiltable upward from horizontal operative position into elevated inoperative position, a suction grip mounted on sald support, means for reciprocating the carriage on said track, said means being co-ordinated with the press to direct thegrip forward to sheet taking position on the platen and backward to 'sheetvdepositing position at' the rear of the platen.

6. The combination Witl'raplatenpress, of a track 'extending' along one side of the platen, aj carriageslidable on the track, a

support hin'ged on the carriagef'and adapted tion into position of disuse-not obstructing access to; the platen, a ;grip carried by said support,-'and means for reciprocating the-00 carriage on; said track, said means being co; ordinated with-the press to shift the grip forward to sheet taking position on the platen; and l'backwardto sheetdepositing position at the rear of the platen. 7. The combination with a platen press, of a' support, a-g'rip carried thereby, 'and' a mounting. for the support movable to direct the grip toward the platen to ,sheettaking position and away from the platen to sheet 79' names tothisfspecification. 1

' ABEL KLUGE. ENEVAL AKLIUGE.

. 7 1 In testimony whereof, we have signed our 

